.chord-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.chord-section h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.chord-section p {
    line-height: 1.6;
    color: #333;
}

.source-note {
    font-size: 0.9rem;
    color: #666;
    margin-top: 2rem;
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th,
td {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: left;
}

th {
    background-color: #f0f0f0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333;
}

header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
    background-color: #ffffff;
}

#content-container {
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.05);
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0 auto;
}

header h1 {
    text-align: start;
    margin-bottom: 1rem;
    color: #2c3e50;
}

footer {
    text-align: center;
    padding: 1rem;
    color: #666;
    opacity: 0.8;
}

.horizontal-nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: row;
    background-color: transparent;
}

.nav-item {
    color: black;
    text-decoration: none;
    padding: 10px;
    transition: color 0.3s;
}

.nav-item.active {
    color: rgb(88, 88, 220);
}